package com.hb.utils;


import javax.servlet.http.HttpServletRequest;

/**
 * 获取IP方法
 */
public class IpUtils {

	private static final String UNKNOWN = "unknown";

	private static final String SELF_IP = "127.0.0.1";

	public static String getIPAddress(HttpServletRequest request) {
		if (request == null) {
			return UNKNOWN;
		}
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
			ip = request.getHeader("Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
			ip = request.getHeader("X-Forwarded-For");
		}
		if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
			ip = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
			ip = request.getHeader("X-Real-IP");
		}

		if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
			ip = request.getRemoteAddr();
		}

		return "0:0:0:0:0:0:0:1".equals(ip) ? SELF_IP : ip.split(",")[0];
	}


}
